Seamless ring forming equipment for unvulcanized rubber strip

Abstract

The utility model discloses seamless ring forming equipment for unvulcanized rubber strips. The seamless ring forming equipment comprises a workbench, a cutting mechanism and a rolling mechanism, wherein the cutting mechanism and the rolling mechanism are mounted on the workbench; the cutting mechanism comprises a first heating roller, a second heating roller, a first rotating roller, a movable second rotating roller and a cutter, wherein the first heating roller and the second heating roller can rotate oppositely, the first rotating roller is arranged on one side of the second heating roller, and the cutter can abut against materials wound around the second heating roller to cut the materials. The rolling mechanism comprises a third heating roller, a fourth heating roller, a third rotating roller and a movable fourth rotating roller, the third heating roller and the fourth heating roller can rotate oppositely, the third rotating roller is arranged on one side of the fourth heating roller, and a plurality of grooves are formed in the surface of the third heating roller and / or the surface of the fourth heating roller and / or the surface of the third rotating roller. The rubber ring rolling device can perform double rolling on a rubber ring, so that the surface of the whole ring-forming rubber ring is smooth and compact, the problems of joint scars, impressions, shadows, bubbles, floccules and the like are avoided, the tensile strength is obviously improved, the yield is high, and the product quality is improved.

Description

Technical Field

[0001] The utility model relates to a device for seamlessly forming an unvulcanized rubber strip loop, belonging to the technical field of semiconductor rubber strip loop forming. Background Art

[0002] At present, in the process of forming a ring of semiconductor perfluoroether rubber strips, the joints of the rubber strips are connected by pressing directly. However, for perfluoroether rubber strips with a high rubber content, especially transparent perfluoroether rubber strips, this direct pressing method has the problem of uneven heating of the rubber strips, and scars, marks, shadows, bubbles, floccules and other problems are easy to appear at the joints, making the surface of the entire ring of rubber rings rough and not dense, and bubbles are easy to appear, thus affecting product quality.

[0003] Therefore, it is urgent to develop a special unvulcanized rubber strip seamless ring-forming equipment to solve the above problems. Utility Model Content

[0004] In order to solve the above problems, the utility model provides a device for seamlessly forming an unvulcanized rubber strip, which makes the surface of the entire ring-formed rubber ring smooth and dense, thereby ensuring product quality.

[0005] The utility model provides a device for seamlessly forming an unvulcanized rubber strip, comprising a workbench and a cutting mechanism and a rolling mechanism installed on the workbench;

[0006] The cutting mechanism comprises a first heating roller and a second heating roller capable of rotating in opposite directions, a first rotating roller arranged on one side of the second heating roller, a movable second rotating roller, and a cutting knife capable of abutting against the material wound around the second heating roller to cut the material;

[0007] The rolling mechanism includes a third heating roller and a fourth heating roller capable of rotating in opposite directions, a third rotating roller arranged on one side of the fourth heating roller, and a movable fourth rotating roller, wherein the surfaces of the third heating roller and / or the fourth heating roller and / or the third rotating roller are provided with a plurality of grooves.

[0008] In one embodiment of the utility model, the cutting mechanism also includes a first gear that rotates synchronously with the first heating roller, a second gear that rotates synchronously with the second heating roller, a first rotation drive mechanism that is drivingly connected to the first gear, and a first linear drive mechanism that is drivingly connected to the first heating roller; wherein, the first gear cooperates with the second gear so that the first gear and the second gear can mesh with each other, the first rotation drive mechanism is used to drive the first gear and the first heating roller to rotate, and the first linear drive mechanism drives the first heating roller and the first gear to move so that the first gear and the second gear are meshed or not meshed; when the first gear is meshed with the second gear, the first gear drives the second gear and the second heating roller to rotate so that the first heating roller and the second heating roller rotate in opposite directions.

[0009] In one embodiment of the utility model, the cutting mechanism also includes a first base, a first bracket and a first slide rail connected to the first base, a first slider and a first fixed block connected to the first slide rail, a first shaft passing through the first slider, and a second shaft passing through the first fixed block; the first gear and the first heating roller are sleeved outside the first shaft and fixedly connected thereto, the second gear and the second heating roller are sleeved outside the second shaft and fixedly connected thereto, the first rotation drive mechanism is drivingly connected to the first gear through the first shaft, the first linear drive mechanism is connected to the first slider, and the first linear drive mechanism drives the first slider, the first shaft, the first heating roller and the first gear to move so that the first gear is engaged or not engaged with the second gear.

[0010] In one embodiment of the utility model, a first supporting seat and a second supporting seat are installed on the first base, and the second supporting seat is installed with a rotatable first rotating roller, and the first rotating roller is located on the side of the second heating roller away from the first heating roller; the first supporting seat is installed with a rotatable second rotating roller, and the second rotating roller is located above the first rotating roller and can move up and down along the first supporting seat.

[0011] In one embodiment of the utility model, a rotatable fixed rod is connected above the first bracket, and the fixed rod is fixedly connected with a cutter facing between the second heating rollers. The fixed rod can rotate to make the cutter abut against the material wound by the second heating roller to cut the material.

[0012] In one embodiment of the utility model, the rolling mechanism also includes a third gear rotating synchronously with the third heating roller, a fourth gear rotating synchronously with the fourth heating roller, a second rotating drive mechanism drivingly connected to the third gear, and a second linear drive mechanism drivingly connected to the third heating roller; wherein the third gear cooperates with the fourth gear so that the third gear and the fourth gear can mesh with each other, the second rotating drive mechanism is used to drive the third gear and the third heating roller to rotate, and the second linear drive mechanism drives the third heating roller and the third gear to move so that the third gear and the fourth gear are meshed or not meshed; when the third gear is meshed with the fourth gear, the third gear drives the fourth gear and the fourth heating roller to rotate so that the third heating roller and the fourth heating roller rotate in opposite directions.

[0013] In one embodiment of the utility model, the rolling mechanism also includes a second base, a second bracket and a second slide rail connected to the second base, a second slider and a second fixed block connected to the second slide rail, a third shaft passing through the second slider, and a fourth shaft passing through the second fixed block; the third gear and the third heating roller are sleeved outside the third shaft and fixedly connected thereto, the fourth gear and the fourth heating roller are sleeved outside the fourth shaft and fixedly connected thereto, the second rotation drive mechanism is drivingly connected to the third gear through the third shaft, the second linear drive mechanism is connected to the second slider, and the second linear drive mechanism drives the second slider, the third shaft, the third heating roller and the third gear to move so that the third gear is engaged or not engaged with the fourth gear.

[0014] In one embodiment of the utility model, a third support seat and a fourth support seat are installed on the second base, the third support seat is installed with a rotatable third rotating roller, and the third rotating roller is located on the side of the fourth heating roller away from the third heating roller; the fourth support seat is installed with a rotatable fourth rotating roller, and the fourth rotating roller is located above the third rotating roller and can move up and down along the fourth support seat.

[0015] In one embodiment of the present invention, the cross section of the groove is elliptical.

[0016] Beneficial Effects

[0017] The utility model cuts the bottomless cylindrical rubber strip formed by the cutting knife provided by the cutting mechanism into a rubber ring with a square cross section, and each roller provided on the cutting mechanism can perform a single rolling press on the rubber strip, so that the rubber embryo joint is tightly connected, and the problems of scars, marks, shadows, bubbles, floccules, etc. at the joint are avoided. The grooves on the surface of each roller of the rolling mechanism can perform a double rolling press on the rubber ring with a square cross section formed by the cutting mechanism, so that the rubber ring with a square cross section eventually becomes a seamless ring-shaped rubber embryo with an elliptical cross section, and further makes the surface of the entire ring-shaped rubber ring smooth and dense, thereby ensuring the product quality. In addition, the ring-shaped rubber ring of the utility model is different from the method of vertical axial calendering of the product by the plunger extruder, and adopts a rolling press method parallel to the axial direction of the product, and there are no problems such as joint scars, marks, shadows, bubbles, floccules, etc., and the tensile strength is significantly improved, the yield rate is high, and the product quality is improved. In addition, a bubble detection program can be set up to puncture the places with bubbles with a needle that meets the semiconductor cleanliness and magnetic requirements, and then continue rolling until the entire rubber embryo surface is smooth, dense, and free of bubbles, so that the sulfur product can pass the seamless inspection under a high-power microscope. The effect is more obvious for perfluoroether rubber strips with a high rubber content, especially transparent perfluoroether rubber strips. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a stereoscopic diagram from one of the viewing angles of the unvulcanized rubber strip seamless loop forming device provided by the utility model.

[0019] Figure 2 This is a stereoscopic diagram from another perspective of the unvulcanized rubber strip seamless loop forming device provided by the utility model.

[0020] Figure 3 A three-dimensional diagram of the cutting mechanism provided by the utility model.

[0021] Figure 4 The cutting mechanism provided by the utility model does not include a stereoscopic view of the first rotary drive mechanism.

[0022] Figure 5 This is a three-dimensional diagram of the rolling mechanism provided by the utility model.

[0023] Figure 6 The rolling mechanism provided for the utility model does not include a stereoscopic view of the second rotary drive mechanism.

[0024] In the figure: 1, first linear drive mechanism; 2, fixed rod; 3, cutter; 4, first shaft; 5, second shaft; 6, first gear; 7, second gear; 8, first support seat; 9, first slider; 10, first fixed block; 11, first rotary drive mechanism; 12, first base; 13, first heating roller; 14, second heating roller; 15, first rotating roller; 16, second rotating roller; 17, first bracket; 18, second support seat; 19, first slide rail; 21, second rotary drive mechanism Mechanism; 22. second base; 23. third heating roller; 24. fourth heating roller; 25. third rotating roller; 26. fourth rotating roller; 27. second bracket; 28. third supporting seat; 29. ​​second slider; 30. second fixed block; 31. second linear drive mechanism; 32. third axis; 33. fourth axis; 34. third gear; 35. fourth gear; 36. second slide rail; 37. fourth supporting seat; 100. cutting mechanism; 200. rolling mechanism; 300. workbench. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] In the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0027] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0028] like Figure 1-6As shown, this embodiment provides a device for seamlessly looping unvulcanized rubber strips, including a workbench 300 and a cutting mechanism 100 and a rolling mechanism 200 installed on the workbench 300 .

[0029] In some embodiments, the cutting mechanism 100 includes a first base 12, a first bracket 17 and a first slide rail 19 connected to the first base 12, a first slider 9 and a first fixed block 10 connected to the first slide rail 19, a first shaft 4 inserted in the first slider 9, a second shaft 5 inserted in the first fixed block 10, a first gear 6 and a first heating roller 13 sleeved outside the first shaft 4 and fixedly connected thereto, a second gear 7 and a second heating roller 14 sleeved outside the second shaft 5 and fixedly connected thereto, a first rotating driving mechanism 11 drivingly connected to the first shaft 4, and a first rotating driving mechanism 12 drivingly connected to the first shaft 4. A first linear drive mechanism 1 connected to a slider 9; wherein the first gear 6 cooperates with the second gear 7 so that the first gear 6 and the second gear 7 can mesh with each other, the first rotation drive mechanism 11 is used to drive the first shaft 4, the first gear 6, and the first heating roller 13 to rotate, and the first linear drive mechanism 1 drives the first slider 9 to move so that the first gear 6 and the second gear 7 are meshed or not meshed; when the first gear 6 and the second gear 7 are meshed, the first gear 6 drives the second heating roller 14 to rotate through the second shaft 5 so that the first heating roller 13 and the second heating roller 14 rotate in opposite directions.

[0030] In this embodiment, the first linear drive mechanism 1 can drive the first slider 9 to move. When the first linear drive mechanism 1 drives the first slider 9 to move to the first fixed block 10, the first gear 6 and the second gear 7 can mesh; at this time, the first rotary drive mechanism 11 drives the first gear 6 to rotate, and the rotating first gear 6 drives the second gear 7, the second shaft 5, and the second heating roller 14 to rotate, so that the first heating roller 13 and the second heating roller 14 rotate in opposite directions, that is, the first heating roller 13 and the second heating roller 14 rotate in opposite directions to squeeze the rubber strip. When the first linear drive mechanism 1 drives the first slider 9 away from the first fixed block 10, the first gear 6 and the second gear 7 are separated and not meshed; at this time, the first gear 6 cannot drive the second gear 7 to rotate, and the first heating roller 13 and the second heating roller 14 are separated from each other, and the rubber blank after roller forming can be removed.

[0031] Furthermore, a first support seat 8 and a second support seat 18 are installed on the first base 12, and a rotatable first rotating roller 15 is installed on the second support seat 18, and the first rotating roller 15 is located on the side of the second heating roller 14 away from the first heating roller 13; the first support seat 8 is installed with a rotatable second rotating roller 16, and the second rotating roller 16 is located above the first rotating roller 15 and can move up and down along the first support seat 8.

[0032] Furthermore, a rotatable fixed rod 2 is connected above the first bracket 17, and the fixed rod 2 is fixedly connected with a cutter 3 facing between the second heating rollers 14. The fixed rod 2 can rotate to make the cutter 3 abut against the material wound by the second heating roller 14 to cut the material.

[0033] In this embodiment, the number of the first bracket 17, the first linear drive mechanism 1, the first slider 9, the first fixed block 10, and the first slide rail 19 are all two; the first slider 9, the first fixed block 10, and the first slide rail 19 are located in the first bracket 17, the first linear drive mechanism 1 is fixedly connected to one side of the first bracket 17, and the output end of the first linear drive mechanism 1 passes through the first bracket 17 and is connected to the first slider 9; the first heating roller 13 and the second heating roller 14 are rotatably installed between the two first sliders 9 and the two first fixed blocks 10, respectively, the first fixed blocks 10 are fixed, and the two first linear drive mechanisms 1 drive the two first sliders 9 to move on the two first slide rails 19 respectively. Among them, since the first shaft 4 is connected to the first rotary drive mechanism 11, the first linear drive mechanism 1 can drive the first rotary drive mechanism 11 to slide on the first base 12 while driving the first slider 9 to move.

[0034] The first heating roller 13 and the second heating roller 14 of the cutting mechanism 100 provided in this embodiment can rotate in opposite directions to form a shear force, which is the first angle in the triangle when the rubber embryo is formed; and the first heating roller 13 and the second heating roller 14 can be heated and the temperature is controllable to heat the rubber strip to soften it. The first rotating roller 5 is the second angle in the triangle when the rubber embryo is formed, which is used to fix the position of the rubber strip coming out and guide it. The second rotating roller 16 is the third angle in the triangle when the rubber embryo is formed, which can move up and down on the first support seat 8 to adjust the height to determine the size of the rubber embryo. Among them, a scale is set on the first support seat 8 to accurately adjust the height of the second rotating roller 16, so as to accurately determine the size of the rubber embryo. That is, the second rotating roller 16 is used to adjust the circumference of the entire rubber embryo, and the scale on the first support seat 8 matched with it is used to set the position and calculate the circumference. The set cutter 3 cuts the bottomless cylindrical rubber strip formed into a rubber ring with a square cross section.

[0035] In some embodiments, the rolling mechanism 200 includes a second base 22, a second bracket 27 and a second slide rail 36 connected to the second base 22, a second slider 29 and a second fixed block 30 connected to the second slide rail 36, a third shaft 32 inserted in the second slider 29, a fourth shaft 33 inserted in the second fixed block 30, a third gear 34 and a third heating roller 23 sleeved outside the third shaft 32 and fixedly connected thereto, a fourth gear 35 and a fourth heating roller 24 sleeved outside the fourth shaft 33 and fixedly connected thereto, a second rotation driving mechanism 21 drivingly connected to the third shaft 32, and a rotation mechanism 35 and a rotation mechanism 35 connected to the second slider 29. 9; wherein the third gear 34 cooperates with the fourth gear 35 so that the third gear 34 and the fourth gear 35 can mesh with each other, the second rotation drive mechanism 21 is used to drive the third shaft 32, the third gear 34, and the third heating roller 23 to rotate, and the second linear drive mechanism 31 drives the second slider 29 to move so that the third gear 34 and the fourth gear 35 are meshed or not meshed; when the third gear 34 is meshed with the fourth gear 35, the third gear 34 drives the fourth heating roller 24 to rotate through the fourth shaft 33 so that the third heating roller 23 and the fourth heating roller 24 rotate in opposite directions.

[0036] In this embodiment, the second linear drive mechanism 31 can drive the second slider 29 to move. When the second linear drive mechanism 31 drives the second slider 29 to move to the second fixed block 30, the third gear 34 and the fourth gear 35 can mesh; at this time, the second rotary drive mechanism 21 drives the third gear 34 to rotate, and the rotating third gear 34 drives the fourth gear 35, the fourth shaft 33, and the fourth heating roller 24 to rotate, so that the third heating roller 23 and the fourth heating roller 24 rotate in opposite directions, that is, the third heating roller 23 and the fourth heating roller 24 rotate in opposite directions to squeeze the rubber strip. When the second linear drive mechanism 31 drives the second slider 29 away from the second fixed block 30, the third gear 34 and the fourth gear 35 are separated and not meshed; at this time, the third gear 34 cannot drive the fourth gear 35 to rotate, and the third heating roller 23 and the fourth heating roller 24 are separated from each other, and the seamless annular rubber blank with an elliptical cross section after roller forming can be removed.

[0037] Furthermore, a third support seat 28 and a fourth support seat 37 are installed on the second base 32, and the third support seat 28 is installed with a rotatable third rotating roller 25, and the third rotating roller 25 is located on the side of the fourth heating roller 24 away from the third heating roller 23; the fourth support seat 37 is installed with a rotatable fourth rotating roller 26, and the fourth rotating roller 26 is located above the third rotating roller 25 and can move up and down along the fourth support seat 37.

[0038] In this embodiment, the number of the second bracket 27, the second linear drive mechanism 31, the second slider 29, the second fixed block 30, and the second slide rail 36 are all two; the second slider 29, the second fixed block 30, and the second slide rail 36 are located in the second bracket 27, the second linear drive mechanism 31 is fixedly connected to one side of the second bracket 27, and the output end of the second linear drive mechanism 31 passes through the second bracket 27 and is connected to the second slider 29; the third heating roller 23 and the fourth heating roller 24 are rotatably installed between the two second sliders 29 and the two second fixed blocks 30, the second fixed blocks 30 are fixed, and the two second linear drive mechanisms 31 drive the two second sliders 29 to move on the two second slide rails 36. Among them, since the third shaft 32 is connected to the second rotary drive mechanism 21, the second linear drive mechanism 31 can drive the second rotary drive mechanism 21 to slide on the second base 22 while driving the second slider 29 to move.

[0039] Furthermore, the surfaces of the third heating roller 23 , the fourth heating roller 24 and the third rotating roller 25 are all provided with a plurality of grooves, and the cross-section of the grooves is elliptical.

[0040] The third heating roller 23 and the fourth heating roller 24 of the rolling mechanism 200 provided in this embodiment can rotate in opposite directions to form a shear force, which is the first angle in the triangle when the rubber blank is formed; and the third heating roller 23 and the fourth heating roller 24 can be heated and the temperature is controllable to heat the rubber strip to soften it. The third rotating roller 25 is the second angle in the triangle when the rubber blank is formed, which is used to fix the position of the rubber strip and guide it. The fourth rotating roller 26 is the third angle in the triangle when the rubber blank is formed, which can move up and down on the fourth support seat 37 to adjust the height to determine the size of the rubber blank. Among them, a scale is set on the fourth support seat 37 to accurately adjust the height of the fourth rotating roller 16, so as to accurately determine the size of the rubber blank. That is, the fourth rotating roller 26 is used to adjust the circumference of the entire rubber blank, and the scale on the fourth support seat 37 matched with it is used to set the position and calculate the circumference. By means of the grooves arranged on the surfaces of the third heating roller 23, the fourth heating roller 24 and the third rotating roller 25, the square cross-section rubber ring formed by the cutting mechanism 100 can be rolled, so that the square cross-section rubber ring is finally transformed into a seamless ring-shaped rubber blank with an elliptical cross-section, thereby completing the entire process of seamlessly forming the unvulcanized rubber strip.

[0041] Optionally, the first linear drive mechanism 1 and the second linear drive mechanism 31 are cylinders, and the first rotary drive mechanism 11 and the second rotary drive mechanism 21 are motors.

[0042] In addition, the utility model also provides a process for seamlessly looping an unvulcanized rubber strip, using the unvulcanized rubber strip seamless looping device, the process comprising the following steps:

[0043] Step 1: preheat the first heating roller 13 and the second heating roller 14 of the cutting mechanism 100, and use the first linear driving mechanism 1 to drive the first slider 9 to move so that the distance between the first heating roller 13 and the second heating roller 14 is smaller than the thickness of the rubber strip;

[0044] Step 2: The unvulcanized rubber strip passes over the second rotating roller 16 of the cutting mechanism 100 and enters between the first heating roller 13 and the second heating roller 14, then passes under the first rotating roller 15 and connects with the rubber strip tail of the second rotating roller 16;

[0045] Step 3: The first rotating drive mechanism 11 drives the first heating roller 13 and the second heating roller 14 to rotate in opposite directions, so that the head and tail of the rubber strip are fused together between the first heating roller 13 and the second heating roller 14 due to temperature and shear force to form a bottomless cylindrical rubber embryo, and after multiple rolling, the thickness of the rubber embryo is uniform;

[0046] Step 4: The fixed rod 2 rotates to make the cutter 3 contact the rubber blank wound by the second heating roller 14 to cut the rubber blank into rings; the first rotary drive mechanism 11 stops running and the first linear drive mechanism 1 drives the first slider 9 to move to separate the first heating roller 13 and the second heating roller 14, and the second rotating roller 16 moves down, and the rubber blank with a square cross section is taken out and transferred to the rolling mechanism 200; wherein, after the excess material is taken out, the sulfur denaturation is tested, and if it is qualified, it is re-produced for use;

[0047] Step 5: Put the rubber blank with a square cross section on the grooves of each roller of the roller pressing mechanism 200 that has been set in position, and the second linear drive mechanism 31 drives the second slider 29 to move so that the rubber blank is squeezed between the third heating roller 23 and the fourth heating roller 24, and adjusts the height of the fourth rotating roller 26 to control the circumference of the entire rubber blank; the second rotary drive mechanism 21 drives the third heating roller 23 and the fourth heating roller 24 to rotate in opposite directions, and rolls the rubber blank with a square cross section into a rubber blank with an elliptical cross section; stop the second rotary drive mechanism 21 and drive the second linear drive mechanism 31 to move the second slider 29 to separate the third heating roller 23 and the fourth heating roller 24, and move the fourth rotating roller 26 downward to remove the seamless annular rubber blank with an elliptical cross section.

[0048] The utility model cuts the bottomless cylindrical rubber strip formed by the cutting knife provided by the cutting mechanism into a rubber ring with a square cross section, and each roller provided on the cutting mechanism can perform a single rolling press on the rubber strip, so that the rubber embryo joint is tightly connected, and the problems of scars, marks, shadows, bubbles, floccules, etc. at the joint are avoided. The grooves on the surface of each roller of the rolling mechanism can perform a double rolling press on the rubber ring with a square cross section formed by the cutting mechanism, so that the rubber ring with a square cross section eventually becomes a seamless ring-shaped rubber embryo with an elliptical cross section, and further makes the surface of the entire ring-shaped rubber ring smooth and dense, thereby ensuring the product quality. In addition, the ring-shaped rubber ring of the utility model is different from the method of vertical axial calendering of the product by the plunger extruder, and adopts a rolling press method parallel to the axial direction of the product, and there are no problems such as joint scars, marks, shadows, bubbles, floccules, etc., and the tensile strength is significantly improved, the yield rate is high, and the product quality is improved. In addition, a bubble detection program can be set up to puncture the places with bubbles with a needle that meets the semiconductor cleanliness and magnetic requirements, and then continue rolling until the entire rubber embryo surface is smooth, dense, and free of bubbles, so that the sulfur product can pass the seamless inspection under a high-power microscope. The effect is more obvious for perfluoroether rubber strips with a high rubber content, especially transparent perfluoroether rubber strips.

[0049] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0050] The above embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the invention patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model.

[0051] The principles and implementation methods of the utility model are described in this article using specific examples. The description of the above examples is only used to help understand the method and core idea of ​​the utility model. It should be pointed out that for ordinary technicians in this technical field, without departing from the principle of the utility model, the utility model can also be improved and modified, and these improvements and modifications also fall within the scope of protection of the claims of the utility model. Therefore, the scope of protection of the utility model patent shall be based on the attached claims.

Claims

1. A seamless looping device for unvulcanized rubber strips, characterized in that: It includes a workbench and a cutting mechanism and a rolling mechanism installed on the workbench; The cutting mechanism comprises a first heating roller and a second heating roller capable of rotating in opposite directions, a first rotating roller arranged on one side of the second heating roller, a movable second rotating roller, and a cutting knife capable of abutting against the material wound around the second heating roller to cut the material; The rolling mechanism includes a third heating roller and a fourth heating roller capable of rotating in opposite directions, a third rotating roller arranged on one side of the fourth heating roller, and a movable fourth rotating roller, wherein the surfaces of the third heating roller and / or the fourth heating roller and / or the third rotating roller are provided with a plurality of grooves.

2. The unvulcanized rubber strip seamless loop forming equipment according to claim 1, characterized in that: The cutting mechanism also includes a first gear that rotates synchronously with the first heating roller, a second gear that rotates synchronously with the second heating roller, a first rotation drive mechanism that is drivingly connected to the first gear, and a first linear drive mechanism that is drivingly connected to the first heating roller; wherein the first gear cooperates with the second gear so that the first gear and the second gear can mesh with each other, the first rotation drive mechanism is used to drive the first gear and the first heating roller to rotate, and the first linear drive mechanism drives the first heating roller and the first gear to move so that the first gear and the second gear are meshed or not meshed; when the first gear is meshed with the second gear, the first gear drives the second gear and the second heating roller to rotate so that the first heating roller and the second heating roller rotate in opposite directions.

3. The unvulcanized rubber strip seamless loop forming equipment according to claim 2, characterized in that: The cutting mechanism also includes a first base, a first bracket and a first slide rail connected to the first base, a first slider and a first fixed block connected to the first slide rail, a first shaft passing through the first slider, and a second shaft passing through the first fixed block; the first gear and the first heating roller are sleeved outside the first shaft and fixedly connected thereto, the second gear and the second heating roller are sleeved outside the second shaft and fixedly connected thereto, the first rotating drive mechanism is drivingly connected to the first gear through the first shaft, the first linear drive mechanism is connected to the first slider, and the first linear drive mechanism drives the first slider, the first shaft, the first heating roller and the first gear to move so that the first gear is engaged or not engaged with the second gear.

4. The unvulcanized rubber strip seamless loop forming equipment according to claim 3, characterized in that: A first supporting seat and a second supporting seat are installed on the first base, and a rotatable first rotating roller is installed on the second supporting seat, and the first rotating roller is located on the side of the second heating roller away from the first heating roller; a rotatable second rotating roller is installed on the first supporting seat, and the second rotating roller is located above the first rotating roller and can move up and down along the first supporting seat.

5. The unvulcanized rubber strip seamless loop forming equipment according to claim 4, characterized in that: A rotatable fixing rod is connected above the first bracket, and a cutting knife facing between the second heating rollers is fixedly connected to the fixing rod. The fixing rod can be rotated to make the cutting knife contact with the material wound by the second heating roller to cut the material.

6. The unvulcanized rubber strip seamless loop forming equipment according to claim 1, characterized in that: The rolling mechanism also includes a third gear rotating synchronously with the third heating roller, a fourth gear rotating synchronously with the fourth heating roller, a second rotation drive mechanism drivingly connected to the third gear, and a second linear drive mechanism drivingly connected to the third heating roller; wherein the third gear cooperates with the fourth gear so that the third gear and the fourth gear can mesh with each other, the second rotation drive mechanism is used to drive the third gear and the third heating roller to rotate, and the second linear drive mechanism drives the third heating roller and the third gear to move so that the third gear and the fourth gear are meshed or not meshed; when the third gear is meshed with the fourth gear, the third gear drives the fourth gear and the fourth heating roller to rotate so that the third heating roller and the fourth heating roller rotate in opposite directions.

7. The unvulcanized rubber strip seamless loop forming equipment according to claim 6, characterized in that: The rolling mechanism also includes a second base, a second bracket and a second slide rail connected to the second base, a second slider and a second fixed block connected to the second slide rail, a third shaft passing through the second slider, and a fourth shaft passing through the second fixed block; the third gear and the third heating roller are sleeved outside the third shaft and fixedly connected thereto, the fourth gear and the fourth heating roller are sleeved outside the fourth shaft and fixedly connected thereto, the second rotation drive mechanism is drivingly connected to the third gear through the third shaft, the second linear drive mechanism is connected to the second slider, and the second linear drive mechanism drives the second slider, the third shaft, the third heating roller and the third gear to move so that the third gear is engaged or not engaged with the fourth gear.

8. The unvulcanized rubber strip seamless loop forming equipment according to claim 7, characterized in that: A third supporting seat and a fourth supporting seat are installed on the second base, the third supporting seat is installed with a rotatable third rotating roller, and the third rotating roller is located on the side of the fourth heating roller away from the third heating roller; the fourth supporting seat is installed with a rotatable fourth rotating roller, and the fourth rotating roller is located above the third rotating roller and can move up and down along the fourth supporting seat.

9. The unvulcanized rubber strip seamless loop forming device according to any one of claims 1 to 8, characterized in that: The cross section of the groove is elliptical.

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